Results 11 to 20 of about 1,649,089 (269)

Theoretical studies on triplet formations in nitrobenzoxadiazole (NBD) derivatives: The impact of donor group and heteroatom substitution

open access: yesResults in Chemistry, 2021
Heavy-atom-free triplet photosensitizers (TPs) have attracted much interest due to the applications in triplet–triplet annihilation (TTA) and photodynamic therapy.
Chao Wang   +3 more
doaj   +1 more source

The DIVER Microscope for Imaging in Scattering Media

open access: yesMethods and Protocols, 2019
We describe an advanced DIVER (Deep Imaging Via Emission Recovery) detection system for two-photon fluorescence microscopy that allows imaging in multiple scattering media, including biological tissues, up to a depth of a few mm with micron resolution ...
Alexander Dvornikov   +2 more
doaj   +1 more source

The Role of Hydrogen Peroxide and Peroxiredoxins throughout the Cell Cycle

open access: yesAntioxidants, 2020
Hydrogen peroxide (H2O2) is an oxidizing agent that induces cellular damage at inappropriate concentrations and gives rise to an arrest during cell cycle progression, causing cell death.
Sukyeong Heo, Suree Kim, Dongmin Kang
doaj   +1 more source

A superior bright NIR luminescent nanoparticle preparation and indicating calcium signaling detection in cells and small animals

open access: yesCell & Bioscience, 2018
Background Near-field fluorescence (NFF) effects were employed to develop a novel near-infrared (NIR) luminescent nanoparticle (LNP) with superior brightness. The LNP is used as imaging contrast agent for cellular and small animal imaging and furthermore
Jian Zhang, Joseph. R. Lakowicz
doaj   +1 more source

Palaeomagnetic and synchrotron analysis of >1.95 Ma fossil-bearing palaeokarst at Haasgat, South Africa

open access: yesSouth African Journal of Science, 2014
Palaeomagnetic analysis indicates that Haasgat, a fossil-bearing palaeocave in the Gauteng Province of South Africa, is dominated by reversed magnetic polarity in its oldest, deepest layers and normal polarity in the younger layers.
Andy I.R. Herries   +7 more
doaj   +1 more source

Interaction of high density lipoprotein particles with membranes containing cholesterol

open access: yesJournal of Lipid Research, 2007
In this study, free cholesterol (FC) efflux mediated by human HDL was investigated using fluorescence methodologies. The accessibility of FC to HDL may depend on whether it is located in regions rich in unsaturated phospholipids or in domains containing ...
Susana A. Sanchez   +2 more
doaj   +1 more source

Comprehensive correlation analysis for super-resolution dynamic fingerprinting of cellular compartments using the Zeiss Airyscan detector

open access: yesNature Communications, 2018
Different fluorescence fluctuation methods require specialized equipment and cannot be performed simultaneously. Here the authors present an implementation that includes many advanced fluorescence fluctuation techniques in a single analysis, by ...
L. Scipioni   +3 more
doaj   +1 more source

AO DIVER: Development of a three-dimensional adaptive optics system to advance the depth limits of multiphoton imaging

open access: yesAPL Photonics, 2020
Multiphoton microscopy (MPM) can non-invasively measure the dynamic biochemical properties deep in scattering biological samples and has the potential to accelerate clinical research with advances in deep tissue imaging.
S. Leemans   +3 more
doaj   +1 more source

Detection and Quantification of DNA by Fluorophore-Induced Plasmonic Current: A Novel Sensing Approach

open access: yesSensors
We report on the detection and quantification of aqueous DNA by a fluorophore-induced plasmonic current (FIPC) sensing method. FIPC is a mechanism described by our group in the literature where a fluorophore in close proximity to a plasmonically active ...
Daniel R. Pierce   +7 more
doaj   +1 more source

Optical Manipulation of Lanthanide-Doped Nanoparticles: How to Overcome Their Limitations

open access: yesFrontiers in Chemistry, 2020
Since Ashkin's pioneering work, optical tweezers have become an essential tool to immobilize and manipulate microscale and nanoscale objects. The use of optical tweezers is key for a variety of applications, including single-molecule spectroscopy ...
Elisa Ortiz-Rivero   +4 more
doaj   +1 more source

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